Dear Al :
This is easily solved. Simply rename the report to represent the reach your are dealing with. You can do that using our ASCII Output Viewer by selecting the menu selection "File | Save As".
If you want the input file(s) to match the output file names, then simply rename the drawing file to represent the reach that you are currently analyzing. This is done using the "File | Save As" menu selection within RiverCAD. Then, simply run the analysis in RiverCAD and all of the files will match.
If you have any additional questions or need any further information, please contact me again.
Sincerely,
Chris E. Maeder, M.S.
Senior Technical Engineer
chris.maeder@bossintl.com